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Finding the Fourth Proportional to 603.83, 906.25 and 430.92

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Solution

The fourth proportional to 603.83, 906.25 and 430.92 is: 646.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    603.83 : 906.25 = 430.92 : x
  2. Step 2: Convert to fraction form
    603.83/906.25 = 430.92/x
  3. Step 3: Cross multiply
    603.83x = 906.25 × 430.92
  4. Step 4: Simplify right side
    603.83x = 390,521.25
  5. Step 5: Solve for x
    x = 390,521.25/603.83
  6. Step 6: Final answer
    x = 646.74

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.